Patents Represented by Attorney, Agent or Law Firm Marvin S. Siskind
  • Patent number: 6835489
    Abstract: A double layered oxygen electrode impregnated with an active catalyst material and method of making. The design of the oxygen electrode promotes oxygen dissociation and absorption within the oxygen electrode. The oxygen electrode has differing layers of hydrophobicity which allow chemical impregnation of the active catalyst material into the oxygen electrode where the active catalyst material is needed most.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: December 28, 2004
    Assignee: Texaco Ovonic Fuel Cell LLC
    Inventors: Srinivasan Venkatesan, Hong Wang, Boyko Aladjov, Subhash Dhar, Stanford R. Ovshinsky
  • Patent number: 6833118
    Abstract: A hydrogen storage bed system which includes a pressure container, a hydrogen storage alloy disposed within the pressure container, and an integrated thermal management system integrally disposed within the pressure container. The integrated thermal management system includes heat generation means, cooling means, and heat distribution means.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: December 21, 2004
    Assignee: Texaco Ovonic Hydrogen Systems LLC
    Inventors: Stanford R. Ovshinsky, Rosa T. Young, Yang Li, Vitaliy Myasnikov, Valeriy Sobolev
  • Patent number: 6831856
    Abstract: The present invention is a method of data storage using a phase-change memory clement operating within its amorphous phase. The element stores at least one bit of data upon the application of a pulse that resets the element to one of at least a first resistance state and a second resistance state. Since the threshold voltage of a memory element varies linearly with its programmed resistance, the stored data can be read by the application of one or more discriminating voltages to the element. The current flowing through the element is limited to prevent a phase change when an applied discriminating voltage is greater than the threshold voltage. When the applied discriminating voltage is less than the threshold voltage, current flowing through the memory element is not limited. Based upon these current outputs, the resistance state of the element is determined.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: December 14, 2004
    Assignee: Ovonyx, Inc.
    Inventor: Boil Pashmakov
  • Patent number: 6830725
    Abstract: Electrochemical and thermal hydrogen storage alloy compositions that provide superior performance, including an electrochemical hydrogen storage alloy that provides superior low temperature discharge characteristics. The alloy compositions include microstructures in the interface region that are highly porous and that include catalytic metallic particles. The microstructures include a large volume fraction of voids having spherical or channel-like shapes and are sufficiently open structurally to facilitate greater mobility of reactive species within the microstructure and in the vicinity of catalytic metallic particles. Greater accessibility to reactive sites accordingly results. The greater mobility of reactive species and/or the greater density of catalytic particles lead to faster kinetics and improved performance (e.g. higher power), especially at low operating temperatures.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: December 14, 2004
    Assignee: Texaco Ovonic Battery Systems, LLC
    Inventors: Michael A. Fetcenko, Stanford R. Ovshinsky, Kwo Young, Benjamin Reichman, Taihei Ouchi, John Koch, William Mays
  • Patent number: 6828057
    Abstract: A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell utilizes framed electrodes to maintain a high air flow rate and low pressure throughout the fuel cell. The fuel cell is also designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen. Gas is predistributed by the compression plates and frames to supply the electrodes with high concentrations of oxygen from air.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: December 7, 2004
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Ana Menjak, Tom Hopper, Zdravko Menjak, Kevin Fok, Boyko Aladjov, Srinivasan Venkatesan, Subhash K. Dhar
  • Patent number: 6823931
    Abstract: A hydrogen gas cooled hydrogen storage element which includes a hydrogen storage alloy material in which hydrogen flow channels are provided. The flow channels provide pathways through the hydrogen storage material to allow for high speed hydrogen gas flow. A portion of the high speed hydrogen flow is stored within the storage material which releases its heat of hydride formation. The remainder of the hydrogen flows through the hydrogen storage material at a sufficient mass flow rate to remove the heat of hydride formation. The unit also includes an encapsulant to prevent any loose particles of the storage material from becoming entrained in the high flow rate hydrogen.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: November 30, 2004
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Ned T. Stetson, Arthur Holland, Trevor Stephenson
  • Patent number: 6820706
    Abstract: A hybrid vehicle having a hydrogen powered internal combustion engine employing a cylinder deactivation strategy during idle or light load conditions. A continuous stream of air is supplied to the hydrogen internal combustion engine. A control system responsive to engine speed and accelerator pedal position calculates a specific amount of hydrogen to inject into the continuous air stream. The resulting stream is combusted in the engine to provide power to the vehicle. During idling or light load conditions, the hydrogen supply to one or more cylinders may cease while maintaining the flow of air to the cylinders. A rechargeable battery and an electric motor receiving power from the battery are used to supplement the hydrogen powered internal combustion engine.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: November 23, 2004
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Robert C. Stempel, Richard O. Geiss, Bruce A. Webster, Ian Kinoshta
  • Patent number: 6818348
    Abstract: An active electrode composition comprising an active electrode material and a binder where the binder comprises a monosaccharide, a disaccharide, a pectin or a molasses. Preferably, the active electrode material is nickel hydroxide.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: November 16, 2004
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Srinivasan Venkatesan, Boyko Aladjov, Kevin Fok, Thomas Hopper, Stanford R. Ovshinsky
  • Patent number: 6815705
    Abstract: A programmable resistance memory element including a pore of memory material which is raised above a semiconductor substrate by a dielectric layer. The pore may be formed with the use of sidewall spacers.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: November 9, 2004
    Assignee: Ovonyx, Inc.
    Inventors: Patrick Klersy, Tyler Lowrey
  • Patent number: 6789757
    Abstract: An apparatus for making hydrogen storage powder by hydride comminution which includes a hydride reactor with at least one chamber for tumbling powder. An apparatus for making hydrogen storage powder by hydride comminution which includes a hydride reactor having multiple chambers linked to one another, wherein at least one chamber is for heating and at least one chamber is for cooling.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: September 14, 2004
    Assignee: Texaco Ovonic Battery Company, Inc.
    Inventors: Kwo Young, Michael A. Fetcenko, Stanford R. Ovshinsky
  • Patent number: 6790551
    Abstract: Fuel cell oxygen electrodes and instant startup fuel cells employing the oxygen electrode. The oxygen electrodes operate through the mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such oxygen electrodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the oxygen electrode at all times. The redox couple materials are modified to inhibit dissolution of the materials into the alkaline electrolyte of the fuel cell, and to match the gas phase kinetics of the active redox couple material with its electrochemical kinetics.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: September 14, 2004
    Assignee: Texaco Ovonic Fuel Cell UC
    Inventors: Srinivasan Venkatesan, Boyko Aladjov, Subhash K. Dhar, Stanford R. Ovshinsky
  • Patent number: 6783891
    Abstract: Fuel cell oxygen electrode and instant startup fuel cells employing such oxygen electrode. The oxygen electrode operates through the mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such oxygen electrodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the oxygen electrode at all times.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: August 31, 2004
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Boyko Aladjov, Subhash Dhar, Kevin Fok, Thomas Hopper
  • Patent number: 6781860
    Abstract: A driver circuit having one or more MOS transistors. The driver circuit is capable of providing an output voltage greater than the power supply voltage; however, the magnitude of the voltages appearing across the terminals of the MOS transistors are preferably less than or equal to the magnitude of the power supply voltage. The driver circuit may comprise a plurality of serially coupled PMOS transistors and a plurality of serially coupled NMOS transistors wherein the plurality of PMOS transistors and plurality of NMOS transistors are coupled at the output node of the driver.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: August 24, 2004
    Assignee: Ovonyx, Inc.
    Inventor: Ward Parkinson
  • Patent number: 6778420
    Abstract: A method of programming a programmable resistance element. The programmable resistance element may be programmed to a BLOWN state. After being programmed to the BLOWN state, the element can no longer be programmed to its low resistance state. The method of programming allows the programmable resistance element to be used as a fuse.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: August 17, 2004
    Assignee: Ovonyx, Inc.
    Inventor: Ward Parkinson
  • Patent number: 6777125
    Abstract: Fuel cell oxygen electrode and instant startup fuel cells employing such oxygen electrode. The oxygen electrode operates through the mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such oxygen electrodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the oxygen electrode at all times.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: August 17, 2004
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovhsinsky, Srinivasan Venkatesan, Boyko Aladjov, Subhash Dhar, Kevin Fok, Thomas Hopper
  • Patent number: 6774387
    Abstract: A programmable resistance memory element using a conductive sidewall layer as the bottom electrode. The programmable resistance memory material deposited over the top edge of the bottom electrode, in a slot-like opening of a dielectric material. A method of making the opening.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: August 10, 2004
    Assignee: Ovonyx, Inc.
    Inventor: Jon Maimon
  • Patent number: 6768666
    Abstract: A reconfigurable and stationary element for the engineering of the wavefront of electromagnetic radiation. The element includes a phase change material that may be reversibly transformed between its crystalline and amorphous states. By forming a gradient in crystallinity, a phase taper may be stored in the phase change material of the instant element. The phase taper provides control of the phase angle of reflected or reradiated electromagnetic radiation. An incident wavefront of electromagnetic radiation interacts with the instant element and is reradiated with controlled propagation characteristics imposed by the stored phase taper. The instant element may provide non-specular reflection, beam steering, focusing, defocusing, symmetrical and asymmetrical cross section effects, and wavefront correction. In a preferred embodiment, a pattern of amorphous marks is formed within a crystalline matrix of phase change material.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: July 27, 2004
    Assignee: Energy Conversion Devices, Inc.
    Inventor: David Tsu
  • Patent number: 6764897
    Abstract: A method of making an electrically operated memory element. The memory element having a contact in electrical communication with a memory material programmable to at least a first resistance state and a second resistance state. Preferably, the contact includes at least a first region having a first resistivity and a second region having a second resistivity greater than the first resistivity where the more resistive region is adjacent to the memory material.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: July 20, 2004
    Assignee: Ovonyx, Inc.
    Inventors: Tyler Lowrey, Stephen J. Hudgens, Patrick J. Klersy
  • Patent number: 6759034
    Abstract: A very low emission hybrid electric vehicle incorporating an integrated propulsion system which includes a hydrogen powered internal combustion engine, a metal hydride hydrogen storage unit, an electric motor, high specific power, high energy density nickel-metal hydride (NiMH) batteries, and preferably a regenerative braking system. The nickel-metal hydride battery module preferably has a peak power density in relation to energy density as defined by: P>1,375−15E, where P is greater than 600 watts/kilogram, where P is the peak power density as measured in Watts/kilogram and E is the energy density as measured in Watt-hours/kilogram.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: July 6, 2004
    Assignee: Ovonic Battery Company, Inc.
    Inventors: Stanford R. Ovshinsky, Robert C. Stempel
  • Patent number: 6750079
    Abstract: A method of making an electrically operated programmable resistance memory element. A sidewall spacer is used as a mask to form raised portions on an edge of a conductive sidewall layer. The modified conductive sidewall layer is used as an electrode for the memory element.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: June 15, 2004
    Assignee: Ovonyx, Inc.
    Inventors: Tyler Lowrey, Patrick Klersy, Stephen J. Hudgens, Jon Maimon